In a remote corner of England's lavish Peak district, a young archaeologist, Angus Flint, unearths a mysterious skull from the garden of Trent Farm. When Angus escorts Eve and Mary, the residents of the farm, to "holiday" festivities at Lord James' castle, the sensuous and snakelike Lady Sylvia Marsh (Amanda Donohoe) seizes the moment - and the skull. Lady Sylvia takes the skull down into the dank recesses of her Gothic mansion where she engages in the erotic worship of her pagan god, the White Worm. Since the worm hungers for the sweet taste of virginal flesh, Lady Sylvia uses her unique charms on Eve - the town's closest offering - and prepares her for the ultimate sacrifice as the snake writhes in anticipation. Lord D’Ampton (Hugh Grant), ancestor of the fabled dragon slayer - James D’Ampton, must reignite the family tradition and save the helpless virgin from the demonic white worm.